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Indebtedness - Additional Information (Detail)

1 Months Ended

12 Months Ended

Jan. 02, 2020

USD ($)

May 09, 2019

USD ($)

Oct. 30, 2018

USD ($)

Oct. 11, 2018

USD ($)

Jan. 03, 2018

USD ($)

Nov. 20, 2017

USD ($)

May 01, 2017

USD ($)

Feb. 28, 2019

USD ($)

Dec. 31, 2019

USD ($)

Property

Dec. 31, 2018

USD ($)

Property

Dec. 31, 2017

USD ($)

Nov. 30, 2019

USD ($)

Nov. 17, 2017

USD ($)

Dec. 31, 2016

USD ($)

Sep. 17, 2015

USD ($)

Debt Instrument [Line Items]

Loss on extinguishment of debt

$ 572,000

$ 572,000

Deferred financing costs

$ 5,606,000

$ 5,927,000

Outstanding Principal

$ 991,178,000

$ 991,415,000

Hartshire Lakes

Debt Instrument [Line Items]

Maturity date

Jan. 31, 2025

Outstanding Principal

$ 16,000,000

Debt interest rate

4.68%

Interest payment period

monthly

Debt Instrument amortization period

30 years

Outstanding Principal, fair value

$ 15,936,000

Creekside Corners

Debt Instrument [Line Items]

Maturity date

Jan. 31, 2025

Outstanding Principal

$ 23,500,000

Debt interest rate

4.56%

Interest payment period

monthly

Debt Instrument amortization period

30 years

Outstanding Principal, fair value

$ 23,426,000

Mortgages-Fixed Rate

Debt Instrument [Line Items]

Number Of Property Dispositions | Property

3

2

Mortgage loan related to property disposition

$ 76,512,000

$ 46,772,000

Mortgages-Fixed Rate | Waterford Landing

Debt Instrument [Line Items]

Maturity date

Jan. 31, 2026

Outstanding Principal

$ 15,500,000

Debt interest rate

4.82%

Interest payment period

monthly

Debt Instrument amortization period

30 years

Outstanding Principal, fair value

$ 15,394,000

Subsequent Event

Debt Instrument [Line Items]

Proceeds from credit facility

$ 62,000,000

Secured Credit Facility

Debt Instrument [Line Items]

Credit facility borrowing capacity

300,000,000

Outstanding Principal

155,743,000

Unsecured Credit Facility

Debt Instrument [Line Items]

Credit facility borrowing capacity

$ 300,000,000

$ 350,000,000

Deferred financing costs

2,336,000

^[1]

1,760,000

^[2]

Outstanding Principal

186,302,000

^[1]

155,743,000

^[2]

Unsecured Revolving Line of Credit

Debt Instrument [Line Items]

Credit facility, revolving line of credit

$ 350,000,000

Maturity date

May 09, 2023

Unsecured revolving line of credit, option to extend additional period

6 months

Maturity term description

option to extend the revolving commitment for two additional 6-month periods under certain circumstances, including the payment of an extension fee

Deferred financing costs

$ 1,129,000

Unsecured Revolving Line of Credit | LIBOR

Debt Instrument [Line Items]

Debt interest rate

1.55%

Unsecured Revolving Line of Credit | Minimum | 1-month LIBOR Rate

Debt Instrument [Line Items]

Debt interest rate

1.25%

Unsecured Revolving Line of Credit | Minimum | Base Rate

Debt Instrument [Line Items]

Debt interest rate

2.50%

Unsecured Revolving Line of Credit | Maximum

Debt Instrument [Line Items]

Credit facility borrowing capacity

$ 600,000,000

Unsecured Revolving Line of Credit | Maximum | 1-month LIBOR Rate

Debt Instrument [Line Items]

Debt interest rate

2.00%

Unsecured Revolving Line of Credit | Maximum | Base Rate

Debt Instrument [Line Items]

Debt interest rate

1.00%

Unsecured Term Loan

Debt Instrument [Line Items]

Credit facility borrowing capacity

$ 100,000,000

$ 100,000,000

Deferred financing costs

$ 917,000

$ 257,000

Unsecured Term Loan | Minimum | LIBOR

Debt Instrument [Line Items]

Debt interest rate

1.20%

Unsecured Term Loan | Maximum | LIBOR

Debt Instrument [Line Items]

Debt interest rate

1.90%

Unsecured Term Loans

Debt Instrument [Line Items]

Credit facility borrowing capacity

$ 200,000,000

Maturity date

Jan. 31, 2024

Deferred financing costs

1,582,000

1,620,000

Proceeds from credit facility

$ 150,000,000

$ 50,000,000

Deferred financing costs

$ 821,000

Outstanding Principal

300,000,000

$ 250,000,000

Unsecured Term Loans | LIBOR

Debt Instrument [Line Items]

Debt interest rate

1.45%

Unsecured Term Loans | Minimum | LIBOR

Debt Instrument [Line Items]

Debt interest rate

1.20%

Unsecured Term Loans | Maximum | LIBOR

Debt Instrument [Line Items]

Debt interest rate

1.90%

Key Bank Senior Facility | Secured Credit Facility

Debt Instrument [Line Items]

Credit facility borrowing capacity

$ 312,500,000

$ 325,000,000

Key Bank Senior Facility | Unsecured Revolving Line of Credit

Debt Instrument [Line Items]

Pool of unencumbered properties occupancy level

$ 100,000,000

[1]	The unsecured credit facility total capacity is $350,000, of which $186,302 was outstanding as of December 31, 2019.
[2]	The secured credit facility total capacity was $300,000, of which $155,743 was outstanding as of December 31, 2018.

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